Richard Kuo / Mbed OS NTOUEE-mbed-PWM_DCservo

mbed PWM DCservo

Diff: main.cpp

Revision:
0:7b5e6b979e90
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Oct 20 12:38:53 2016 +0000
@@ -0,0 +1,18 @@
+// using NuMaker-PFM-NUC472 PWM1 output to drive DC servo motor
+#include "mbed.h"
+
+PwmOut pwm1(PF_10); // PWM1 pinname
+
+int main() {
+    
+    int i=0;
+    printf("...DCserv Start...\n\r");
+    pwm1.period_us(20000);      // set PWM period to 20ms (50Hz)
+        
+    for (i=500; i<=2500; i=i+200) { // from 0.5ms to 2.5ms
+        pwm1.pulsewidth_us(i);      // set PWM pulse width to rotate motor
+        Thread::wait(1000);         // delay
+        printf("DCservo pulse width = %d\n\r", i);
+    } 
+    printf("...DCserv End.....\n\r");                             
+}